Coal-washing machine.



J. A. MONTGOMERY. GOAL WASHING XAOHINE. nrmonxon FILED JAI.2B.1910.

95%,986. Pat-enwd 34112121910 3 Manna-alum 1.

J. A. MONTGOMERY.

COAL WASHING HAOHKNE. APPLIOAHOI rump uzma. mo.

Patented Apr. 12, NM).

3 ISEZTB-HHBET 2.

JAMES ALEXANDER MONTGOMERY, OF BIRMINGHAM, ALABAMA.

COALWASHING MACHINE.

QE-Ltbelti.

lpootfloltton of Letter: Yatent.

Patented Anal. 12, 1910.

Application tiled January 28, 1910. Scrtml F30. M03378.

To all whom it may concern:

lle. it known that I, James A. Monroe.- env. a citizen of the United States, residing at Birmingham, in the county of Jefferson and State of Alabama, have invented certain new and useful -lmprovcnients in Coal-\Vush in t; hllachines; and I do hereby declare the following to be a full. clear, and exact description of the invention, such as will anable others skilled in the art to which it appertains to make and use the same-reference being had to the aeocmflpanying rawinggs, and to the letters of re erence marked thereon, which form a part of this specification. A

My invention relates to improvements in an apparatus for the washing of coal by igs. I

One object of my invention consists in the provision of an inclined stationary screen across the ji tank which receives the coal to be washed and has disposed beneath it a ru-iprocating plunger carrying tlap valves which operatetn force the water up through the screen without permitting the water to wash over the sides of the screen as is the case where the screen and plunger move together.

further object of my invention is to so arran ye the screen that the slate discharged thcretimn does not fall into the jig tank but is discharfiged into a separate compartment. by whi'ci means the water in the ii is kept ,niuch freer from slate and dirt an the per cent. of iish in the Washed coal inaterially reduced.

it. still further object of my invention is to provide an oscillatory slate valve which controls the slate port at the lower edge of the inclined scrt-rcn, said valve being adjustable so as to vary the openingof the port. without changing; the length of stroke which it derives from the operating mechanism which reciprocates the plunger.

My invention comprises the details of constrttctinn and arrangement of )aits'hereinafter more fully described and illustrnted in the aecoinpanyihg drawings, in which Figure 1 is avertical sectional elevation nlon the line :v;r of Fig. 3, only suilicient of tie side wall of the supply tank being shown to illustrate the port through which the water flows beneath the jig tank. lFi .2 is a detail view of the cam o )erating rnec anisn: for the slate ate. F ig. 3. is a trip plan view of the was er complete, the seti tling tank being broken away and the slate elevator removed. Fi t is a fmnt view showing the washer with the settling tank broken away to give an end view of one jig and showing the slate elevator.

biiinilnr reference characters refer to similar parts throughout the drawings.

According to my invention as illustrated, I rovide a washer having at one side a settl ng tank R which receives through inclined chutes Q the coal washed thorn the two jigs Y. These jigs are so arated by a slate tank Z having an inclin bottom and provided with a slate elevator K of ordinary construction. The jigs each comprise a rectangular tank '1" provided with an inclined bot m '1" having a plurality of arts con trol ed by inlet flap valves 0 whic open inwardly from the water supply reservoir fl dis osed below the partition '1" and supplied wit water through ,aoport S leading from the main supply tank 5' to which the water tlnws from the settling tank It, as indicated by the arrows in Fi '2", down chutes S" and S. The division s de walls of the twoljig tanks and of the slate tank beneath their Ill inclined bottoms, are rovided with ports similar to S so that a nil supply of water from the tank S is maintained under the bottoins '1", the end wall of the last jig tank being closed to prevent any escape of the water except through the ports controlled by the valves 0'.

To provide for the most effective agitation of the coal for washing purposes, I provide across the top of each of the g tanks an inclined screen 1 which, at its lower end,

lend. to a slate port I This screen is rigidly mounted stationary .in the tank and the coal is dischar ed thereon at the upper end thereof by a c nte (not shown), which delivers the coal against a baffle plate T. To properly agitate the coal so as to etifect tinde ired separation of the coal from thr slate. I provide beneath the screen P a plun get N which fits substantially ti ht in the tank and moves in contact-Witt friction plates V secured to the side walls of the tank. This plunger is provided with a s ries of orts closed by upwardly ning' water in ct. valves 0 suitably pivoted t ierett- At or near each corner I provide a rut.

L which passes up beside the screen and throu rh suitable guides M and is connected by a 321k L to a stud If on cranks C and C. The cranks (l and C are mount-sci Qt poeite ends of each of two-parallel shafts li suitably mounted in journal bearings on the upper timbers of the washer, the crmnks C havin adjustable studs E to which are connect eccentric rods operated by eccentrice'B keyed to a main power shaft A su tulhly' mounted in bearings and extend ng over both jig tanks and adapted to receive war from any suitable source of en ply.

reverse disposition of the cranks and of-their respective eccentrics B is such as to cause the several-cranks to simultancousl lift the rods L to oscillate the plunger which acts on its down stroke to cause the valves 0 to open and take in above the plumgar a sup 1y oil water from thotan 'l" which we or on the up stroke is forced through the screen P, causing an agitation of the 00ml and slate and effectively separat ing it so that the coal washes over the chutcs Q with the surplus water and falls into the aettlin tank, while the slate works itself town the slate rt P, from whence it alon the inclined slate bottoms J oil the tank to the bottom end of the slate tank Z, where it is takenup by the elevator K and die of in the usual manner. The up ltro e of the plun or N acts by suction to o n the valves iii and draw in a supp 0 water from beneath the bottom T", w ile the surplus water from the settling with: R returns in the manner described bcneath the bottoms T of the jig tanks, thus maintaining a complete ravity circulation, The coal delivered to c settling tank R is removal thcreilnuin in the usual manner. To secure the best results in the separation, it is advisable to provide an oscillating gate valve I for the slate port, which valve 1 tom the slate valve and which is mounted in suitable guides I and connected by two rods I to cranks lll keyed to the shaft X on which the slate gate lever G is also rigidly fixed.) The lever (l carries a dog G by means of which it engages in one or the other of the notches of a segment i which is loosely mounted on the shaft and connected to a lever F which carries a weight at its outer end and at an intermediate point rests u n a cam F "l'lOlllliLKl upon the adjaoent shaft 1). As he shaft 1) is oiwillate'd through the ccccntric mechanism dcscribcd,

the cam F will raise and lower the lover F and, through the connection of the semolnt and do the lover (l and arm ll Wi 1 be raised an lowered in synchroniarn with th 'rnovomaehte of the plunger so that the sla e gate will move downwardly with the down stroke of the plunger and will lift with adapter the up stroke of the plunger, the vibrating movement oi the gate acting to greatly incilitntr the discharge of different sized lumps of slate through said port. lly mow ing the dog G into cngagcnn-nt with diiiicrent notches in the so nent F v the relative oscillatory position o the slate gate I, with, relation to the port l can be adjusted to suit varying conditions.

According to my construction it will be evident that there is no clnincc for thc \vatcr from the tank '1" to wash over the screen and deposit the dirt and slatc on the coal as it washes over the chute Q. which is the case in all constructions where the screen is os cillated in the jig tank. Also the water which washes the coal is maintained much cleaner by preventing any direct discharge of thc slatc thcrcinto.

What I claim to be now is:-

in a coal washing nppnrut us, the combination of a tank having an inclined bottom -with vulvercgulatcd openings therein and divided into compartnu-nts, screens: mounted in each compartment at inclinations, the wall of each compartment havin an exit openin adjuccnt to the lower end 0 each screen an each opcni u into a narrow compartment having a V-s a med bottom with an opcnin r at its lower on a conveyor movable an sail l opening, a plunger having valve-regulated openings thcrcin and mounted one underneath each of said screens, friction strips upon the walls of the compartments adjacent to said plunger, a driving shaft journalod in suitable lXtll'lllgS in the frame, countcr shafts, crank arms terminating in eyes fixcd to the latter. lmrs fastened to said pluugcrs and ha 'ing their upper cnds bifurcated and l to receive the cycs at the ends of suit crank arms, pins passing through istcrin apertures in said arms and eyes, a mclk eh it, a slide mounted over each screen and aid acenl to ouch exit opc'nnig, lilik-oimnections between the rock sha is and f uid slides, means for automatically rockin said shaft u crank arm fixed to one of saiil counter shafts and having an elongated slot therein, an eccentric disk fixed to the driving shaft, an eccentric strip mounted shout said eccentric and having an arm adjusts-ably held in said slot of the crank arm.

In testimony whereof l hereunto :nliix my signature in the presence of two witncseu-s.

JAMES ALEXANDER MOKTGUMEHY.

Witnesses: v

WHLLIAM E. Huron, Mrs. Boer, P. FAHISB.

ivolul 

